Official NHA Assessment
Race 4: GALLOP FORM MAIDEN PLATE (F & M) (For Maiden Fillies and Mares)
Line Horse
Tipperary
Reference for assessment
Exact Matches
1 / 13
Calculated = Official
Close Matches
5 / 13
Within 2 points
Significant Diffs
7 / 13
More than 5 points
Detailed Assessment
------------------------------------------------------------------------------------------------------------------------ Pos Horse Age Weight Fin Lengths WFA Pre Race Rating New Adj ------------------------------------------------------------------------------------------------------------------------ 1 Heavenly Mafia 2 56.5 1 0.00 0.0 78 65 65 -13 2 Thought Control 3 59.0 2 3.50 5.0 - 61 61 +61 3 Tipperary 3 60.0 3 3.75 5.0 63 63 63 +0 4 Baltic Assayer 2 60.0 4 5.45 0.0 56 72 72 +16 5 Roy's Blossom 4 60.0 5 8.55 3.0 66 66 66 +0 6 Sovereign Gem 3 59.0 6 8.60 5.0 - 60 60 +60 7 Annie's Song 3 60.0 7 8.90 5.0 68 62 62 -6 8 Lemon Thyme 3 60.0 8 10.80 5.0 64 62 62 -2 9 Ada Lovelace 2 59.0 9 13.80 0.0 70 70 70 +0 10 Princess Charmer 2 60.0 10 14.10 0.0 55 72 72 +17 11 Bookworm 2 59.0 11 24.70 0.0 - 70 70 +70 99 Hollywood Heiress 2 59.0 99 0.00 0.0 - 70 70 +0 99 Magical Spring 3 59.0 99 0.00 5.0 - 60 60 +0 ------------------------------------------------------------------------------------------------------------------------
Horse-by-Horse Comparison
| Pos | Horse | Pre-Rating | Official New | Calculated | Discrepancy | WFA (kg) | Line Horse | Calculation |
|---|---|---|---|---|---|---|---|---|
| 1 | Heavenly Mafia | 78 | 79 | 65 | +14 | 0.0 | - | |
| 2 | Thought Control | - | 79 | 61 | +18 | 5.0 | - | |
| 3 | Tipperary Line | 63 | 64 | 63 | +1 | 5.0 | ||
| 4 | Baltic Assayer | 56 | 53 | 72 | -19 | 0.0 | - | |
| 5 | Roy's Blossom | 66 | 54 | 66 | -12 | 3.0 | - | |
| 6 | Sovereign Gem | - | 75 | 60 | +15 | 5.0 | - | |
| 7 | Annie's Song | 68 | 63 | 62 | +1 | 5.0 | - | |
| 8 | Lemon Thyme | 64 | 62 | 62 | ✓ Match | 5.0 | - | |
| 9 | Ada Lovelace | 70 | 72 | 70 | +2 | 0.0 | - | |
| 10 | Princess Charmer | 55 | 50 | 72 | -22 | 0.0 | - | |
| 11 | Bookworm | - | - | 70 | -70 | 0.0 | - | |
| 99 | Hollywood Heiress | - | 65 | 70 | -5 | 0.0 | - | |
| 99 | Magical Spring | - | 62 | 60 | +2 | 5.0 | - |
Assessment Methodology
Calculation Steps:
- Identify Line Horse - consistent performer used as reference
- Calculate WFA Allowance based on age, distance, and month
- Apply Drag Adjustment for beaten margin
- Calculate Actual Weight Performance:
Weight - Drag - WFA - Compare to Line Horse to determine race rating
- Apply special rules (maiden caps, layoff allowance)
Key Formulas:
- Drag Effect: Varies by distance (see Benchmarks page)
- 1 length ≈ 1kg at 1 mile (1600m)
- WFA Scale: Based on Admiral Rous's 1855 table
- Rating Points: 1kg = 2 rating points